Medically reviewed by Susan Bard, MD Some causes of underarm rash include infection, allergic reaction, and inflammation.

Medically reviewed by Casey Gallagher, MD Armpit rashes often develop due to allergic reactions, infections, and chronic conditions. Rashes are common under the arms because the skinfold creates a ...

Irritant contact dermatitis of the armpit results in a red, inflamed ... result in red papules, bumps, or even larger boils that can be painful. The rash can also be itchy. How to treat it ...

They might be red or filled with clear liquid. The bumps can feel itchy or painful. Often, heat rash forms in areas where your skin rubs together, like your armpits, or where clothing rubs against ...

Do you know what chigger bites look like? The tiny mites — also called berry bugs — may leave behind small, itchy red bumps. While it's easy to confuse chigger bites for other types of insect ...